That variety doesn't get obnoxiously big. Definitely keep them. It's even hard to get stuck by them and you can bounce them in your hands without issue.
Lol! About 5 mins. Ago I picked them up with my Clean fingers and put them in my DT, as I took my Hob fuge off. It actually hung on the side and was ugly. Putting most of the chaeto and rubble rock in one of my back chambers.